PT86943B - NERVED BRIDGE CONNECTED BY FOLDED PLATES - Google Patents
NERVED BRIDGE CONNECTED BY FOLDED PLATES Download PDFInfo
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- PT86943B PT86943B PT86943A PT8694388A PT86943B PT 86943 B PT86943 B PT 86943B PT 86943 A PT86943 A PT 86943A PT 8694388 A PT8694388 A PT 8694388A PT 86943 B PT86943 B PT 86943B
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- bridge
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/268—Composite concrete-metal
Abstract
Description
PATENTE DE INVENÇÃOINVENTION PATENT
N.° 86 943No. 86 943
REQUERENTE: CAMPENON BERNARD BTP, francesa, industrial e comercial, com sede em 92/98 Boulevard Victor Hugo, 92115 Clichy, França.APPLICANT: CAMPENON BERNARD BTP, French, industrial and commercial, headquartered at 92/98 Boulevard Victor Hugo, 92115 Clichy, France.
EPÍGRAFE: ·' PONTE NERVURADA LIGADA POR CHAPAS DOBRA DASEPIGRAPH: · 'NERVURED BRIDGE CONNECTED BY DOUBLE PLATES
INVENTORES: René Thivans.INVENTORS: René Thivans.
Reivindicação do direito de prioridade ao abrigo do artigo 4.° da Convenção de Paris de 20 de Março de 1883.Claim of the right of priority under Article 4 of the Paris Convention of 20 March 1883.
França em 11 de Março de 1987, sob o ns.France on March 11, 1987, under n s.
87.03337.87.03337.
INR. MOO. 113 RF 10732 •ν' ~ q jINR. MOO. 113 RF 10732 • ν '~ q j
patente de invenção de CAMPENON BERNARB BTP, francesa, industrial e comercial, com sede em 92/98 Boulevard Victor Hugo, 92115 Clichy, França, (inventor: René Thivans, residente em França), para PONTE NERVURABA IIGABA FOR CHAPAS BOBRABAS.CAMPENON BERNARB BTP, French, industrial and commercial patent, based at 92/98 Boulevard Victor Hugo, 92115 Clichy, France, (inventor: René Thivans, resident in France), for PONTE NERVURABA IIGABA FOR CHAPAS BOBRABAS.
Memória BescritivaBescritiva Memory
A presente invenção refere-se a uma ponte que compreende pelo menos uma nervura superior de betão e uma nervura inferior de betSo ou de metal ligadas uma à outra por elementos de estrutura resistentes aos esforços de córte.The present invention relates to a bridge comprising at least an upper rib of concrete and a lower rib of concrete or metal connected to each other by structural elements resistant to cutting forces.
As duas nervuras da ponte transmitem os binários, enquanto que os elementos de estrutura ou almas dispostas entre estas nervuras transmitem os esforços de corte.The two ribs of the bridge transmit the torques, while the structural elements or webs arranged between these ribs transmit the cutting efforts.
Numa das formas de realização conhecidas, as almas sSo constituídas por uma série de barras dispostas em No Algumas destas barras determinadas trabalham à compressão e outras à tracçSo·In the known embodiments, OH souls constituted by a series of bars arranged in No. Some of these bars certain working in compression and the other tracçSo ·
As nervuras e as almas podem ser de betSo e/ou de aço·Ribs and webs may be made of concrete and / or steel ·
Noutras formas de realizaçSo conhecidas, por exemplo segundo a patente suíça 378 504 e o pedido de patente francês 2 494 400, as almas dispostas entre as nervuras sSo constituídas por elementos de chapas dobradas. Estas chapas dobradas sSo diecontínuas, isto é separadas umas das outras na direcção do comprimento da ponte·In other known embodiments, for example according to Swiss patent 378 504 and French patent application 2,494,400, the webs arranged between the ribs are made up of folded sheet elements. These folded plates are di-continuous, that is, they are separated from each other in the direction of the length of the bridge.
Em todas as formas de realização conhecidas, se se desejar obter almas que transmitam esforços de corte importantes, é-se obrigado a multiplicar o número de almas e/ou aumentar a espessura destas» Assim, no caso de obras destinadas a suportar esforços de corte muito importantes, a construção é pesada e por conseguinte difícil de realizar» objecto da presente invenção consiste em criar uma ponte que resiste a esforços de corte importantes, sendo no entanto de construção leve e fácil de realizar»In all known embodiments, if it is desired to obtain souls that transmit important cutting efforts, it is obliged to multiply the number of souls and / or increase the thickness of these »Thus, in the case of works intended to support cutting efforts very important, the construction is heavy and therefore difficult to carry out »the object of the present invention is to create a bridge that resists significant cutting efforts, yet is lightweight and easy to carry out»
Segundo a presente invenção, a ponte compreende pelo menos uma nervura superior de betão e uma nervura inferior de betão ou de metal ligadas uma à outra por elementos de estrutura resistente aos esforços de córte e é caracterizada por estes elementos de estrutura compreenderem duas chapas de aço contínuas, dobradas ou onduladas, dispostas de um lado e do outre de um plano vertical da ponte, estendendo-se as dobras ou ondulações numa direcção sensivelmente perpendicular ao comprimento da ponte»According to the present invention, the bridge comprises at least an upper rib of concrete and a lower rib of concrete or metal connected to each other by elements of structure resistant to cutting forces and is characterized in that these elements of structure comprise two steel sheets continuous, folded or wavy, arranged on one side and the other on a vertical plane of the bridge, the folds or undulations extending in a direction substantially perpendicular to the length of the bridge »
A Requerente constatou que o facto de substituir as almas de chapas dobradas discontínuas conhecidas segundo a patente suíça 578 504 e o pedido de patente francês 2 494 400 por almas de chapas dobradas ou onduladas contínuas permitia aumentar de maneira considerável a resistência da obra aos esforços de corte»The Applicant found that replacing the discontinuous folded sheet souls known according to Swiss patent 578 504 and French patent application 2 494 400 with continuous folded or corrugated sheet souls allowed to considerably increase the resistance of the work to the efforts of cut"
Assim» a presente invenção permite realizar uma ponte capaz de resistir a esforços de corte importantes utilizando chapas dobradas ligeiras e portanto fáceis de montar»Thus »the present invention makes it possible to create a bridge capable of resisting important cutting efforts using light folded sheets and therefore easy to assemble»
Segundo uma versão preferida da presente invenção, as chapas contínuas compreendem duas séries de tiras planas situadas em dois planos paralelos, estando as tiras de uma das séries ligadas às tiras da outra série por tiras planas que formam um certo ângulo com estas, sendo a junção entre ae tiras constituída por uma aresta»According to a preferred version of the present invention, continuous plates comprise two series of flat strips located in two parallel planes, the strips of one series being connected to the strips of the other series by flat strips that form a certain angle with them, the junction being between strips and an edge »
Esta estrutura confere à chapa dobrada tuna excelen te resistência aos esforços de corte, mesmo quando esta chapaThis structure gives the folded sheet tuna excellent resistance to cutting efforts, even when this sheet
tem tuna espessura reduzida a alguns milímetros.its thickness is reduced to a few millimeters.
Na aplicaçSo considerada pela presente invenção, a espessura das chapas está compreendida entre 8 e 12 mm, a amplitude das dobras está compreendida entre 10 e 50 cm e a dimensão das chapas medida na direcçSo destas dobras está compreendida entre 2 e 12 m.In the application considered by the present invention, the thickness of the sheets is between 8 and 12 mm, the amplitude of the folds is between 10 and 50 cm and the dimension of the sheets measured in the direction of these folds is between 2 and 12 m.
Outras particularidades e vantagens da presente invenção serão evidentes ainda na descrição seguinte.Other features and advantages of the present invention will also be evident in the following description.
Nos desenhos anexos, dados a título de exemplos não limitativos, as figuras representam:In the attached drawings, given as non-limiting examples, the figures represent:
A figo 1, uma vista em perspectiva parcial de uma ponte segundo a presente invenção;Figure 1 is a view in partial perspective of a bridge according to the present invention;
A figo 2, uma vista em corte transversal de uma chapa dobrada utilizada na ponte segundo a presente invenção;Fig. 2 is a cross-sectional view of a folded sheet used in the bridge according to the present invention;
A fig. 3, uma vista em perspectiva parcial de uma variante de realização de uma ponte segundo a presente invenção;Fig. 3, a partial perspective view of a bridge embodiment according to the present invention;
As fig. 4 a 17» vistas esquemáticas em corte trans versai de diferentes variantes de realização da presente invenção;Figs. 4 to 17 »schematic cross-sectional views of different embodiments of the present invention;
A fig. 18, uma vista esquemática lateral e parcial de uma ponte segundo a presente invenção, mostrando como a chapa dobrada contínua transmite esforços; eFig. 18, a schematic side and partial view of a bridge according to the present invention, showing how the continuous folded sheet transmits forces; and
A fig. 19» uma vista análoga à figo 18, que ilustra o caso de uma ponte conhecida que compreende chapas dobradas discontínuas.Fig. 19 »a view analogous to fig 18, which illustrates the case of a known bridge comprising discontinuous folded plates.
Na forma de realização da figo 1» a ponte segundo a presente invenção compreende uma nervura superior constituída por uma laje de betão (1) e uma laje inferior constituída por uma viga de betão (2) ligada à laje (1) por duas chapas de aço (3) e (4) contínuas e dobradas dispostas de um lado e do outro de um plano vertical médio (?) da ponte, estendendo-se as dobras ou ondulações numa direcçSo sensivelmente perpendicular ao comprimento da ponte«In the embodiment of Figure 1 »bridge according to the invention comprises an upper rib comprises a concrete slab (1) and a slab bottom constituted by a concrete girder (2) connected to the slab (1) by two plates steel (3) and (4) continuous and folded arranged on one side and on the other side of an average vertical plane (?) of the bridge, the folds or undulations extending in a direction substantially perpendicular to the length of the bridge «
No exemplo representado na fig. 1, o conjunto consIn the example shown in fig. 1, the cons set
tituido pela laje (1), a viga (2) e as chapas dobradas (3) e (4) assenta em pilares de betão (5) por intermédio de separadores laterais (6) que se estendem entre a laje (1) e a viga (2). Como se vê na fig. 2, as chapas contínuas (3) e (4) compreendem cada uma duas séries de tiras planas (7,8) situadas em dois planos paralelos, estando as tiras (7) de uma das séries ligadas às tiras da outra série por tiras planas (9) fazendo um certo ângulo (a) (igual a 37° no exemplo representado) com estas últimas, sendo a junção entre as tiras constituida por uma aresta.replaced by the slab (1), the beam (2) and the folded sheets (3) and (4) rest on concrete pillars (5) by means of side separators (6) that extend between the slab (1) and the beam (2). As seen in fig. 2, the continuous plates (3) and (4) each comprise two series of flat strips (7.8) located in two parallel planes, the strips (7) of one series being connected to the strips of the other series by flat strips (9) making a certain angle (a) (equal to 37 ° in the example shown) with the latter, the junction between the strips being formed by an edge.
Conforme os esforços que a ponte deve suportar, a espessura das chapas (3) e (4) pode variar entre 8 e 12 mm, a amplitude (a) das dobras (7,9) e (9,8) pode variar entre 10 e 30 cm e a dimensão das chapas medida na direcção longitudinal destas dobras pode variar entre 2 e 12 m. íor outro lado, a largura das tiras (7), (δ) e (9) pode variar entre 0,25 e 0,50 m.Depending on the stresses that the bridge must support, the thickness of the plates (3) and (4) can vary between 8 and 12 mm, the amplitude (a) of the folds (7.9) and (9.8) can vary between 10 and 30 cm and the dimension of the sheets measured in the longitudinal direction of these folds can vary between 2 and 12 m. On the other hand, the width of the strips (7), (δ) and (9) can vary between 0.25 and 0.50 m.
No caso da forma de realização da fig, 1, 0 conjunto constituído pela laje (1), as duas chapas dobradas (3) e (4) e a viga inferior (2) forma uma estrutura tubular de secção triangular constante. Dado que as chapas dobradas (3) e (4) são contínuas, a superfície lateral do conjunto mencionado é completamente fechada.In the case of the embodiment of fig, 1, the set consisting of the slab (1), the two folded plates (3) and (4) and the lower beam (2) form a tubular structure of constant triangular section. Since the folded plates (3) and (4) are continuous, the side surface of the mentioned assembly is completely closed.
S exactamente o caso na ponte representada na fig, 3, Neste exemplo, as nervuras superior e inferior são constituídas por lajes (10) e (11) paralelas de betão. Estas estão ligadas uma à outra por duas chapas dobradas (3) e (4) idênticas às da forma de realização segundo a fig. 1.This is exactly the case for the bridge shown in Fig. 3. In this example, the upper and lower ribs are made up of parallel concrete slabs (10) and (11). These are connected to each other by two folded plates (3) and (4) identical to those of the embodiment according to fig. 1.
Na fig, 3, vê-se além disso que cada chapa dobrada (3,4) compreende em cada um dos seus bordos adjacentes às lajes (10) e (11) uma placa (12,13) perpendicular ao plano geral da chapa (3,4) e transbordando para um lado e para o outro deste plano» Estas placas (12,13) compreendem na sua face voltada para o exterior, uma série de ligadores metálicos (14) mergulhados no betão das lajes (10,11),In fig. 3, it is further seen that each folded sheet (3,4) comprises at each of its edges adjacent to the slabs (10) and (11) a sheet (12,13) perpendicular to the general plane of the sheet ( 3,4) and overflowing to one side and the other of this plane »These plates (12,13) comprise a series of metal connectors (14) immersed in the concrete of the slabs (10,11) on their outward facing side ,
Assim, as chapas (3,4) estão solidamente ancoradas nas lajes (10,11),Thus, the plates (3,4) are solidly anchored in the slabs (10,11),
Pode adoptar-se um tal modo de ligação igualmente no caso da forma de realização da fige le Such a connection method can also be adopted in the case of the embodiment of fig and l and
As chapas contínuas (3,4) não são em geral feitas numa só peça a todo o comprimento da ponte. Estas chapas são de preferência constituidas por elementos de chapas dobradas realizadas numa só peça na direcção perpendicular ao comprimento da ponte e fixadas umas nas outras no sentido do comprimento da ponte por soldadura, rebitagem, aperto por parafusos e porcas ou similares.Continuous plates (3,4) are generally not made in one piece over the entire length of the bridge. These plates are preferably formed by elements of folded plates made in one piece in the direction perpendicular to the length of the bridge and fixed to each other in the direction of the bridge length by welding, riveting, tightening by screws and nuts or the like.
As variantes de realização representadas nas fig.The embodiments shown in figs.
a 17 apresentam em comum o facto de a nervura superior ser uma laje (1,15) de betão.to 17 have in common the fact that the upper rib is a concrete slab (1.15).
Nas variantes representadas nas fig. 4 a 7, as nervuras inferiores são constituidas por duas vigas metálicas (16) (fig. 4 e 5) ou de betão (17) (fig. 6 e 7)» sendo as chapas dobradas (3) e (4) perpendiculares à laje (15).In the variants shown in figs. 4 to 7, the lower ribs consist of two metal beams (16) (fig. 4 and 5) or concrete (17) (fig. 6 and 7) »the sheets being bent (3) and (4) perpendicular to the slab (15).
No caso das fig. 5 e 7» duas chapas dobradas (18) e (19) suplementares estendem-se respectivamente a partir dos bordos da chapa (3) adjacentes à laje (15) e à viga (16) ou (17) formando um diedro cujo vértice está situado no plano vertical (P) de simetria da ponte.In the case of fig. 5 and 7 »two additional folded plates (18) and (19) extend respectively from the edges of the plate (3) adjacent to the slab (15) and the beam (16) or (17) forming a dihedral whose apex is located in the vertical plane (P) of symmetry of the bridge.
Estas duas chapas (18) e (19) que formam um diedro permitem reforçar a estrutura.These two plates (18) and (19) that form a dihedral allow to reinforce the structure.
As fig. 8 e 9 são vistas em corte transversal da forma de realização representada na fig. 1.Figs. 8 and 9 are a cross-sectional view of the embodiment shown in fig. 1.
As fig. 10 e 11 são análogas às fig. 8 e 9· A dife rença reside no facto de a viga de betão (20) que constitui a nervura inferior ser oca e apresentar um diâmetro maior que o da viga (2) das fig. 1, 8 e 9.Figs. 10 and 11 are analogous to figs. 8 and 9 · The difference lies in the fact that the concrete beam (20) that constitutes the lower rib is hollow and has a larger diameter than the beam (2) of figs. 1, 8 and 9.
Nas formas de realização das fig. 12 a 17, a nervura inferior é constituída por uma laje de betão (21,22,23,24,In the embodiments of fig. 12 to 17, the lower rib consists of a concrete slab (21,22,23,24,
25,26) de largura variável, menor que a da laje superior (15) formando as chapas dobradas (3) e (4) dispostas simetricamente de um lado e do outro do plano (P) vertical da ponte um certo ângule com este plano.25,26) of variable width, smaller than that of the upper slab (15) forming the folded plates (3) and (4) arranged symmetrically on one side and on the other of the vertical plane (P) of the bridge a certain angle with this plane .
- 5 Todas as formas de realização que se acaba de descrever apresentam as vantagens de ser de realização fácil, relativamente pouco dispendiosas e leves, apresentando no entanto uma resistência aos esforços de corte nitidamente maior que a das estruturas conhecidas que utilizam chapas dobradas discontínuas segundo a patente suíça 378 504 e o pedido de patente francês 2 494 400, como se vai demonstrar a seguir.- 5 All of the embodiments just described have the advantages of being easy to make, relatively inexpensive and light, however presenting a resistance to cutting efforts significantly greater than that of known structures that use discontinuous folded sheets according to Swiss patent 378 504 and French patent application 2,494,400, as will be shown below.
Numa alma de chapa dobrada contínua (3) (ver a fig. 18), os esforços de corte dão lugar a um campo uniforme de tensões de corte t . 0 dimensionamento de uma tal estrutura consiste em verificar que a tensão de corte um lado, à segurança' admissível t é inferior, por coeficiente de à tensão de corte tensão de empenamento k conveniente e, tm para o aço ’· tv com um outro lado, por tV tm discontínua (1) (2)In a continuous folded sheet core (3) (see fig. 18), the cutting forces give rise to a uniform field of cutting stresses t. The design of such a structure consists in verifying that the shear stress on one side, at the 'permissible safety t' is lower, due to the coefficient of shear stress, the suitable warping stress k and, tm for steel '· tv on the other side , by tV have discontinuous (1) (2)
Numa alma de chapa esforços de corte dão igualmente , mas a elas juntam-se tensões (3b,3c,3d) (ver a origem a tensões s de compressão e fig. 19) os de corte t de tracção longitudinais (isto é, paralelas à geratriz das dobras) devidas ao binário de flexão que solicita cada elemento de alma (comportamento denominado de viga de escada). Para o dimensionamento de uma tal estrutura, convém verificar que a tensão de corte t é menor que o valor admissível tm , que a estabilidade fica assegurada sob a acção conjugada do corte e das tensões de compressão e, finalmente pressão são inferiores ao valor , que as tensões de comsm admissível, ou seja:Cutting forces are also applied to a sheet metal, but stresses (3b, 3c, 3d) are added to them (see the origin of compressive stresses and fig. 19) those of longitudinal traction cuts (ie parallel) to the generatrix of the folds) due to the bending torque required by each core element (behavior called stair beam). For the design of such a structure, it should be noted that the shear stress t is less than the permissible value tm, that stability is ensured under the combined action of the shear and the compression stresses and, finally, pressure is lower than the value, that permissible comsm voltages, ie:
A condição Í4-) £ mais severa que a condição (1)9 mas para as almas de ponte é a condição (6) que penaliza fortemente as almas discontínuas,.The condition (4) is more severe than condition (1) 9 but for bridge souls it is condition (6) that strongly penalizes discontinuous souls.
Examinemos a título de exemplo o caso de uma ponte corrente de 60 m de vão» A altura h da alma é de cerca de 1/20 do vão, ou sejam 3,0 m.Let us examine, as an example, the case of a current bridge of 60 m span »The height h of the web is about 1/20 of the span, or 3.0 m.
A alma de chapa dobrada contínua tem as caracterís ticas seguintes:The continuous folded sheet web has the following characteristics:
- espessura í e = 0,008 m- thickness e = 0.008 m
- largura de um painel : 1 = 0,3 m- width of a panel: 1 = 0.3 m
- amplitude : a = 0,18 m- amplitude: a = 0.18 m
- altura da alma : h = 3,0 m- web height: h = 3.0 m
Esta alma de chapa dobrada contínua pode resistir a um esforço de corte Te que vale:This continuous folded sheet web can withstand a T cutting effort and is worth:
Te — tm x e x h ou tm - 0,42 se se - 360 MPa (limite elástico do aço) donde : Tc = 0,42 x 360 x 0,008 x 3 = 3,63 MNT e - tm xexh or tm - 0.42 if - 360 MPa (elastic limit of steel) where: T c = 0.42 x 360 x 0.008 x 3 = 3.63 MN
Tc ~ 3»63 MN = 37θ toneladasT c ~ 3 »63 MN = 37θ tons
A alma discontínua com as mesmas características (ver a fig„ 19) resiste a um esforço de corte Td; cada elemento de alma tem uma largura total L = 0,5 m e um momento de inércia IThe discontinuous core with the same characteristics (see fig „19) withstands a cutting effort T d ; each core element has a total width L = 0.5 m and a moment of inertia I
3 Z.3 Z.
I = e X L /12 = 0,008 x 0,5 /12 = 0,0000833 mI = e X L / 12 = 0.008 x 0.5 / 12 = 0.0000833 m
0s elementos de alma sSo submetidos a momentos de flexão M que são máximos nas extremidades, onde têm o valor :The web elements are subjected to bending moments M which are maximum at the ends, where they have the value:
M = ± TaoL/h x H/2 = ± 0,25 TclM = ± TaoL / hx H / 2 = ± 0.25 Tcl
A estes momentos correspondem tensões de compressão e de tracção :These moments correspond to compression and traction stresses:
= M/I X L/2 = 0,25/0,0000833 = 0,5/2 x Td == M / IXL / 2 = 0.25 / 0.0000833 = 0.5 / 2 x T d =
750 Td 750 T d
Por outro lado : sm = se/1,15 = 515 MPaOn the other hand: sm = se / 1.15 = 515 MPa
A condição (6) dáCondition (6) gives
740 Td ^d 0,417 MN ~ 42,5 toneladas.740 T d ^ d 0.417 MN ~ 42.5 tons.
Verifica-se que a relação Te/Tô & muito elevada : T«/Td = 570/42,5 =8,7It appears that the ratio T e / T ô & very high: T «/ T d = 570 / 42.5 = 8.7
Assim, para um dimensionamento idêntico, uma alma de chapa dobrada contínua segundo a presente invenção pode trans mitir um esforç© de corte de oito vezes maior que o que pode transmitir uma alma de chapa dobrada discontfnua.Thus, for an identical design, a continuous folded sheet web according to the present invention can transmit a cutting effort eight times greater than that which can transmit a discontinuous folded sheet web.
claro que a presente invenção não se limita aos exemplos de realização que se acaba de descrever sendo possível introduzir numerosas modificaçães sem se sair do quadro da presente invenção.it is clear that the present invention is not limited to the examples of realization that have just been described, making it possible to introduce numerous modifications without departing from the scope of the present invention.
Assim, cada ponte poderia incluir mais de duas cha pas dobradas contínuas entre a nervura superior e a ou as nervuras inferiores.Thus, each bridge could include more than two continuous folded plates between the upper and lower ribs.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8703337A FR2612216B1 (en) | 1987-03-11 | 1987-03-11 | BRIDGE WITH JOINTS CONNECTED BY PLEATED SHEETS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PT86943A PT86943A (en) | 1989-03-30 |
| PT86943B true PT86943B (en) | 1995-03-01 |
Family
ID=9348855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT86943A PT86943B (en) | 1987-03-11 | 1988-03-10 | NERVED BRIDGE CONNECTED BY FOLDED PLATES |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4912794A (en) |
| EP (1) | EP0283383B1 (en) |
| AT (1) | ATE59867T1 (en) |
| DE (2) | DE3861479D1 (en) |
| ES (1) | ES2003852B3 (en) |
| FR (1) | FR2612216B1 (en) |
| GR (1) | GR880300165T1 (en) |
| NO (1) | NO880997L (en) |
| PT (1) | PT86943B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2693491A1 (en) * | 1992-07-09 | 1994-01-14 | Dumez | Factory made site assembled steel sheet bridge beams and deck units - comprise steel main beams fixed to deck spanning between and acting as permanent shuttering for concrete with stiffeners below |
| FR2708638B1 (en) * | 1993-08-04 | 1995-10-13 | Campenon Bernard Sge | Metal beam element for producing a mixed elongated structure with a cross-section of the box type, method for implementing this element, and elongated structure produced by implementing this method. |
| US6058666A (en) * | 1997-08-31 | 2000-05-09 | Lin; Wei-Hwang | Twin-axis prestressed single-tee beam with lower flange and process of construction |
| DE19858328C1 (en) | 1998-12-17 | 2000-03-30 | Dornier Gmbh | Mobile road bridge has composite panels and reinforcing belts to support corrugated sidewalls |
| FR2798407B1 (en) * | 1999-09-15 | 2001-10-26 | Entpr Razel Freres | CONTINUOUS SOUL ASSEMBLY FOR MIXED FRAMEWORK ART WORK, AND MIXED FRAMEWORK ART WORK MADE WITH SUCH A SOUL ASSEMBLY |
| HRP20020044B1 (en) * | 2002-01-16 | 2008-11-30 | Mara-Institut D.O.O. | Indirectly prestressed, concrete, roof-ceiling construction with flat soffit |
| ES2246146B1 (en) * | 2004-06-25 | 2007-04-16 | STRUCTURAL CONCRETE & STEEL, S.L. | PRELOSA AUTOPORTANTE. |
| US7861346B2 (en) | 2005-06-30 | 2011-01-04 | Ail International Inc. | Corrugated metal plate bridge with composite concrete structure |
| DE102005063173A1 (en) * | 2005-12-30 | 2007-07-12 | Universität Kassel | bridge construction |
| KR20070111241A (en) * | 2006-05-17 | 2007-11-21 | 재단법인 포항산업과학연구원 | Bottom tube composite(btc) steel girder bridge system |
| JP4143935B2 (en) * | 2006-09-08 | 2008-09-03 | 首都高速道路株式会社 | Vertical rib composite floor slab |
| FR2906547B1 (en) * | 2006-10-02 | 2009-01-09 | Razel Sa | WORK OF ART WITH MIXED FRAMEWORK. |
| US8161691B2 (en) * | 2008-05-14 | 2012-04-24 | Plattforms, Inc. | Precast composite structural floor system |
| US8297017B2 (en) | 2008-05-14 | 2012-10-30 | Plattforms, Inc. | Precast composite structural floor system |
| US8453406B2 (en) | 2010-05-04 | 2013-06-04 | Plattforms, Inc. | Precast composite structural girder and floor system |
| US8381485B2 (en) | 2010-05-04 | 2013-02-26 | Plattforms, Inc. | Precast composite structural floor system |
| JP6368510B2 (en) * | 2014-03-19 | 2018-08-01 | 大成建設株式会社 | PC box girder bridge and the method of constructing lower floor board concrete below the steel flange connected to the corrugated steel plate |
| US9422680B2 (en) * | 2014-04-14 | 2016-08-23 | Guido FURLANETTO | Deck |
| JP6308502B2 (en) * | 2015-06-10 | 2018-04-11 | 株式会社富士ピー・エス | Construction method of pre-tension slab in overhang construction |
| JP6530255B2 (en) * | 2015-06-25 | 2019-06-12 | 三井住友建設株式会社 | Bridge girder |
| DE102017210710A1 (en) | 2017-06-26 | 2018-12-27 | Deere & Company | Threshing or separating basket for the grain harvest |
| CN112726956B (en) * | 2020-12-30 | 2022-04-12 | 深圳市市政设计研究院有限公司 | Prestressed corrugated steel web-concrete composite beam and construction method thereof |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE76977C (en) * | DRENCKHAHN & SUDHOP in Braunschweig, Brabantstrafse 4 | Girder cover | ||
| FR784806A (en) * | 1933-11-02 | 1935-07-25 | Budd Edward G Mfg Co | Improvements to beams and joists |
| US2125691A (en) * | 1933-11-22 | 1938-08-02 | Budd Edward G Mfg Co | Sheet metal beam |
| CH326084A (en) * | 1955-01-31 | 1957-12-15 | Birkenmaier Max | Process for producing a composite structure from concrete, in particular reinforced concrete, and structure produced according to this process |
| US3103025A (en) * | 1958-12-03 | 1963-09-10 | Kaiser Aluminium Chem Corp | Structural unit |
| AT218220B (en) * | 1959-02-06 | 1961-11-27 | Franz Dr Ing Mlynek | Beams consisting of upper and lower chords as well as connecting webs, in particular girders for roof structures |
| DE1211240B (en) * | 1961-04-22 | 1966-02-24 | Beteiligungs & Patentverw Gmbh | Bridge structure with overhead carriageway |
| CH401120A (en) * | 1961-05-13 | 1965-10-31 | Beteiligungs & Patentverw Gmbh | Isotropic carrier |
| US3257764A (en) * | 1962-09-27 | 1966-06-28 | Reynolds Metals Co | Bridge construction with girder having triangular intermediate and rectangular end cross-sectional configurations |
| FR2108984B1 (en) * | 1970-10-27 | 1974-08-23 | Boutard Claude | |
| US3849237A (en) * | 1971-04-08 | 1974-11-19 | L Zetlin | Structural member of sheet material |
| DE2156017A1 (en) * | 1971-11-11 | 1973-05-17 | Dyckerhoff & Widmann Ag | PRE-TENSIONED STEEL COMPOSITE BEAM |
| US3872532A (en) * | 1973-03-15 | 1975-03-25 | Said Cornelius By Said Pulpane | Prefabricated bridge |
| US3999354A (en) * | 1975-07-31 | 1976-12-28 | Alcan Aluminum Corporation | Structural member and box beam employing same |
| DE2744367A1 (en) * | 1977-10-01 | 1979-04-05 | Maschf Augsburg Nuernberg Ag | High speed transport system elevated track support - has inverted triangular cross=section with upper support surface for vehicles made at least partly of steel |
| DE2810934A1 (en) * | 1978-03-14 | 1979-09-27 | Berlin Modernisierung Baukomb | Composite building structure for wide ceilings, roofs or walls - has support cores or trapezoid profiles form locked to folded structures |
| SU831893A1 (en) * | 1979-07-27 | 1981-05-23 | Ленинградский Ордена Трудовогокрасного Знамени Инженерно- Строительный Институт | Span structure |
| FR2494400A1 (en) * | 1980-11-14 | 1982-05-21 | Campenon Bernard | Work of art using concrete slabs - has corrugated or creased components with upper and lower sections forming tubular structure |
| US4713924A (en) * | 1982-07-09 | 1987-12-22 | Toti Andrew J | Structural beam and panel systems and methods and apparatus for making the same |
-
1987
- 1987-03-11 FR FR8703337A patent/FR2612216B1/en not_active Expired - Lifetime
-
1988
- 1988-03-04 NO NO880997A patent/NO880997L/en unknown
- 1988-03-07 US US07/165,116 patent/US4912794A/en not_active Expired - Lifetime
- 1988-03-09 EP EP88400552A patent/EP0283383B1/en not_active Expired - Lifetime
- 1988-03-09 DE DE8888400552T patent/DE3861479D1/en not_active Expired - Lifetime
- 1988-03-09 DE DE198888400552T patent/DE283383T1/en active Pending
- 1988-03-09 AT AT88400552T patent/ATE59867T1/en not_active IP Right Cessation
- 1988-03-09 ES ES88400552T patent/ES2003852B3/en not_active Expired - Lifetime
- 1988-03-10 PT PT86943A patent/PT86943B/en not_active IP Right Cessation
-
1989
- 1989-01-31 GR GR88300165T patent/GR880300165T1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0283383B1 (en) | 1991-01-09 |
| US4912794A (en) | 1990-04-03 |
| PT86943A (en) | 1989-03-30 |
| NO880997D0 (en) | 1988-03-04 |
| ES2003852A4 (en) | 1988-12-01 |
| FR2612216B1 (en) | 1991-07-05 |
| ES2003852B3 (en) | 1991-08-01 |
| GR880300165T1 (en) | 1989-01-31 |
| DE3861479D1 (en) | 1991-02-14 |
| NO880997L (en) | 1988-09-12 |
| DE283383T1 (en) | 1989-01-05 |
| EP0283383A1 (en) | 1988-09-21 |
| FR2612216A1 (en) | 1988-09-16 |
| ATE59867T1 (en) | 1991-01-15 |
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| Date | Code | Title | Description |
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| FG3A | Patent granted, date of granting |
Effective date: 19940805 |
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| PC3A | Transfer or assignment |
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| PD3A | Change of proprietorship |
Owner name: CAMPENON BERNARD Effective date: 20020819 Free format text: CAMPENON BERNARD SGE FR Effective date: 20020819 Free format text: CAMPENON BERNARD FR Effective date: 20020819 Free format text: CAMPENON BERNARD FR Effective date: 20020819 |
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| TE3A | Change of address (patent) |
Owner name: CAMPENON BERNARD SGE Effective date: 20020819 Free format text: CAMPENON BERNARD SGE FR Effective date: 20020819 |
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| MM4A | Annulment/lapse due to non-payment of fees, searched and examined patent |
Free format text: MAXIMUM VALIDITY LIMIT REACHED Effective date: 20090805 |